/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jbpm.msg.jms;
import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Session;
import org.jbpm.JbpmContext;
import org.jbpm.JbpmException;
import org.jbpm.db.JobSession;
import org.jbpm.graph.exe.Token;
import org.jbpm.job.Job;
import org.jbpm.msg.MessageService;
public class JmsMessageServiceImpl implements MessageService {
private static final long serialVersionUID = 1L;
JobSession jobSession = null;
Connection connection = null;
Session session = null;
Destination destination = null;
MessageProducer messageProducer = null;
boolean isCommitEnabled = true;
public JmsMessageServiceImpl(Connection connection, Session session, Destination destination, boolean isCommitEnabled) {
this.connection = connection;
this.session = session;
this.destination = destination;
this.isCommitEnabled = isCommitEnabled;
JbpmContext jbpmContext = JbpmContext.getCurrentJbpmContext();
if (jbpmContext==null) {
throw new JbpmException("instantiation of the JmsMessageService requires a current JbpmContext");
}
this.jobSession = jbpmContext.getJobSession();
}
public void send(Job job) {
try {
jobSession.saveJob(job);
Message message = session.createMessage();
message.setLongProperty("jobId", job.getId());
if (job.getToken()!=null) {
message.setLongProperty("tokenId", job.getToken().getId());
}
if (job.getProcessInstance()!=null) {
message.setLongProperty("processInstanceId", job.getProcessInstance().getId());
}
if (job.getTaskInstance()!=null) {
message.setLongProperty("taskInstanceId", job.getTaskInstance().getId());
}
getMessageProducer().send(destination, message);
} catch (JMSException e) {
throw new JbpmException("couldn't send jms message", e);
}
}
public void close() {
Throwable exception = null;
try {
if (messageProducer!=null) messageProducer.close();
} catch (Exception e) {
// NOTE that Error's are not caught because that might halt the JVM and mask the original Error.
exception = e;
}
try {
if ( (session!=null)
&& (isCommitEnabled)
) {
session.commit();
}
} catch (Exception e) {
if (exception!=null) {
exception = new JbpmException("couldn't commit JMS session", e);
} else {
exception = e;
}
}
try {
if (session!=null) session.close();
} catch (Exception e) {
if (exception!=null) {
exception = new JbpmException("couldn't close JMS session", e);
} else {
exception = e;
}
}
try {
if (connection!=null) connection.close();
} catch (Exception e) {
if (exception!=null) {
exception = new JbpmException("couldn't close JMS connection", e);
} else {
exception = e;
}
}
if (exception!=null) {
throw new JbpmException("couldn't close one of the jms objects", exception);
}
}
protected MessageProducer getMessageProducer() throws JMSException {
if (messageProducer==null) {
messageProducer = session.createProducer(destination);
}
return messageProducer;
}
}